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Dvinal [7]
2 years ago
9

An object will not change its motion unless an outside force acts on it true or false

Physics
2 answers:
Gre4nikov [31]2 years ago
7 0

Answer:

True!

Explanation:

Newton's First Law :)

Komok [63]2 years ago
6 0

Answer:

True

Explanation:

Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.

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How long will it take a person walking at 2.1 m/s to travel 13 m?
MrRissso [65]

Answer:

I gonna give you the number so but you need to round 6.19047619048

Explanation:

  • This is a speed formula so you would use the formula speed=distance/time
  • You need to rearrange it to time=distance/speed
  • So you need to divide 13m by 2.1 m/s

7 0
2 years ago
A ball is thrown so that its initial vertical and horizontal components of velocity are 30 m/s and 15 m/s, respectively. Estimat
mihalych1998 [28]

Answer:

H = 45 m

Explanation:

First we find the launch velocity of the ball by using the following formula:

v₀ = √(v₀ₓ² + v₀y²)

where,

v₀ = launching velocity = ?

v₀ₓ = Horizontal Component of Launch Velocity = 15 m/s

v₀y = Vertical Component of Launch Velocity = 30 m/s

Therefore,

v₀ = √[(15 m/s)² + (30 m/s)²]

v₀ = 33.54 m/s

Now, we find the launch angle of the ball by using the following formula:

θ = tan⁻¹ (v₀y/v₀ₓ)

θ = tan⁻¹ (30/15)

θ = tan⁻¹ (2)

θ = 63.43°

Now, the maximum height attained by the ball is given by the formula:

H = (v₀² Sin² θ)/2g

H = (33.54 m/s)² (Sin² 63.43°)/2(10 m/s²)

<u>H = 45 m</u>

6 0
2 years ago
In which one or more of the following is the earth assumed to be the center of the universe?
sladkih [1.3K]
Can you put the answers, if there are any?
Once you do, Ill respond with a answer asap!
:)
4 0
2 years ago
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When it reacts with another element, an oxygen atom gains two electrons.
luda_lava [24]

Answer:

A

Explanation:

An ion with a negative charge

3 0
3 years ago
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HELP ME PLEASE If an object is placed under a force of 20 N, it accelerates at a rate of 5 m/s^2. If the force is increased to 5
lara [203]

Answer:

b

Explanation:

3 0
3 years ago
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